International Harvester - Tractor Serial Number Table- ((exclusive))

The Ultimate Guide to International Harvester Tractor Serial Numbers

Dating the Machine: It allows owners to verify if a tractor was built in a specific "model year," which often begins in the fall rather than on January 1st. International Harvester Tractor Serial Number Table-

  • 1939: 501 – 10,000
  • 1940: 10,001 – 30,000
  • 1941: 30,001 – 60,000
  • 1942: 60,001 – 85,000
  • 1943: 85,001 – 100,000
  • 1944: 100,001 – 135,000
  • 1945: 135,001 – 170,000
  • 1946: 170,001 – 250,000
  • 1947: 250,001 – 390,000

. There is often a motor serial number embossed on a flat machined spot near the #1 spark plug (front of the engine). While it may not always match the chassis exactly, it usually corresponds closely. How to Read the Tables The Ultimate Guide to International Harvester Tractor Serial

International Harvester Tractor Serial Number Table — Informative Paper

Introduction

International Harvester (IH) tractors were produced from the early 1900s through the 1980s under the International Harvester Company (IHC) and later Navistar-linked divisions. Serial number tables are essential for identifying manufacture year, model variants, production location, and sequence — useful for restoration, valuation, parts sourcing, and historical research. This paper summarizes the structure of IH tractor serial numbering, key model series, major production ranges, how to read serials, notable exceptions, and recommended resources for deeper research. 1939: 501 – 10,000 1940: 10,001 – 30,000

H & M Series and Later: Often located on the transmission housing or on a plate near the engine.

Introduction